The vulnerability of the write_headers() function in the cpp-httplib library, which allows a hacker to modify protected information

The vulnerability of the writeheaders function in the cpp-httplib library is related to the lack of measures taken to neutralize CRLF sequences. Exploiting this vulnerability could allow an attacker, operating remotely, to modify protected information by sending a specially crafted HTTP request...

UBUNTU-CVE-2026-21428

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the writeheaders function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines. This vulnerability allows attackers to add...